I am trying to grow a lemon tree from seed and after circa 1 month tree is almost 5cm tall. However, this weekend it rained roughly and i checked my plants. I found out that my lemon tree has white/brown spots on the leaves. Moreover, one leaf is dead at the bottom of the tree (it is marked with orange circle). Yesterday, I had sprayed some water with garlic (serves as a pesticide). Is this early blight?
Moreover, I have a Jade plant that I have been growing for around 1.5 months from a cutting. This cutting had brown spots on the leaves as you can see in the image. This weekend it had rained roughly and many leaves with the brown spots fall down but not the strong green ones.
Additional details: I use organic pesticides and fungicides such as garlic and baking soda. I haven't sprayed baking soda for the past 2 weeks now and I do not exclude that the brown spots grow on the lemon tree after in the last two weeks. The brown spots on the jade there were even there before I stopped spraying.